APA (7e ed.) Bronvermelding

Não informado. (2001). Pig improvement services. Meat and Livestock Commission.

Chicago (17e ed.) Bronvermelding

Não informado. Pig Improvement Services. Bletchley, Inglaterra: Meat and Livestock Commission, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Pig Improvement Services. Meat and Livestock Commission, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.